query: SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
question: Which names first a-used professional or owner which ain't a-used a dog no names?
query_toks: SELECT first_name FROM Professionals UNION SELECT first_name FROM Owners EXCEPT SELECT name FROM Dogs
query_toks_no_value: select first_name from professionals union select first_name from owners except select name from dogs
question_toks: Which names first a-used professional or owner which ain't a-used a dog no names?